Envisions Math Topic 2 Review

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities in which the ratio of one quantity to the other quantity remains constant.

Front

Does the equation y = 22x represent a proportional relationship?

Back

Yes, the graph is a straight line passing through the origin.

Front

If the rate is 50 kilometers per hour, how far can be traveled in 2.5 hours?

Back

125 kilometers.

Front

Find the Unit Rate: 405 rotations in 5 minutes.

Back

81 rotations per minute.

Front

Does the table represent a proportional relationship?

Back

Yes.

Front

What does it mean for a graph to pass through the origin?

Back

It means that when the value of x is 0, the value of y is also 0.

Front

What is the formula to find the unit rate?

Back

Unit Rate = Total Quantity / Total Time.

Front

If a car travels 150 miles in 3 hours, what is the unit rate in miles per hour?

Back

50 miles per hour.

Front

What is the constant of proportionality in the equation y = 5x?

Back

The constant of proportionality is 5.

Front

How do you determine if a relationship is proportional from a table of values?

Back

Check if the ratios of corresponding values are constant.